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SIAM Conference on Computational Science and Engineering

Description: The Second SIAM Conference on Computational Science and Engineering was held in San Diego from February 10-12, 2003. Total conference attendance was 553. This is a 23% increase in attendance over the first conference. The focus of this conference was to draw attention to the tremendous range of major computational efforts on large problems in science and engineering, to promote the interdisciplinary culture required to meet these large-scale challenges, and to encourage the training of the next generation of computational scientists. Computational Science & Engineering (CS&E) is now widely accepted, along with theory and experiment, as a crucial third mode of scientific investigation and engineering design. Aerospace, automotive, biological, chemical, semiconductor, and other industrial sectors now rely on simulation for technical decision support. For federal agencies also, CS&E has become an essential support for decisions on resources, transportation, and defense. CS&E is, by nature, interdisciplinary. It grows out of physical applications and it depends on computer architecture, but at its heart are powerful numerical algorithms and sophisticated computer science techniques. From an applied mathematics perspective, much of CS&E has involved analysis, but the future surely includes optimization and design, especially in the presence of uncertainty. Another mathematical frontier is the assimilation of very large data sets through such techniques as adaptive multi-resolution, automated feature search, and low-dimensional parameterization. The themes of the 2003 conference included, but were not limited to: Advanced Discretization Methods; Computational Biology and Bioinformatics; Computational Chemistry and Chemical Engineering; Computational Earth and Atmospheric Sciences; Computational Electromagnetics; Computational Fluid Dynamics; Computational Medicine and Bioengineering; Computational Physics and Astrophysics; Computational Solid Mechanics and Materials; CS&E Education; Meshing and Adaptivity; Multiscale and Multiphysics Problems; Numerical Algorithms for CS&E; Discrete and Combinatorial Algorithms for CS&E; Inverse Problems; Optimal Design, Optimal Control, and Inverse Problems; Parallel and Distributed Computing; Problem-Solving Environments; Software ...
Date: January 1, 2003
Partner: UNT Libraries Government Documents Department

SIAM Workshop: Focus on Diversity 2001

Description: The Society for Industrial and Applied Mathematics (SIAM) held a workshop focused on underrepresented minorities--graduate and undergraduate students, postdocs, and recent Ph.D's--in the mathematical and computational sciences on July 11, 2001, as part of the SIAM Annual Meeting in San Diego, California. The workshop was intended to accomplish several goals: (1) to a provide workshop focused on careers for and retention of minority students in the mathematical and computational sciences; (2) to bring together a mixture of people from different levels of professional experience, ranging from undergraduate students to senior scientists in an informal setting in order to share career experiences and options; (3) to provide an opportunity for minority graduate students, postdocs, and recent Ph.D's to present their research at an international meeting; (4) to expose undergraduate students to the many professional opportunities resulting from graduate degrees in science and mathematics; and (5) to encourage undergraduate and graduate students to speak frankly with each other about personal issues and experiences associated with pursuing a scientific career.
Date: January 1, 2001
Partner: UNT Libraries Government Documents Department

Numerical Modeling of Reactive Multiphase Flow for FCC and Hot Gas Desulfurization Circulating Fluidized Beds

Description: This work was carried out to understand the behavior of the solid and gas phases in a CFB riser. Only the riser is modeled as a straight pipe. A model with linear algebraic approximation to solids viscosity of the form, {musubs} = 5.34{epsisubs}, ({espisubs} is the solids volume fraction) with an appropriate boundary condition at the wall obtained by approximate momentum balance solution at the wall to acount for the solids recirculation is tested against experimental results. The work done was to predict the flow patterns in the CFB risers from available experimental data, including data from a 7.5-cm-ID CFB riser at the Illinois Institute of Technology and data from a 20.0-cm-ID CFB riser at the Particulate Solid Research, Inc., facility. This research aims at modeling the removal of hydrogen sulfide from hot coal gas using zinc oxide as the sorbent in a circulating fluidized bed and in the process indentifying the parameters that affect the performance of the sulfidation reactor. Two different gas-solid reaction models, the unreacted shrinking core (USC) and the grain model were applied to take into account chemical reaction resistances. Also two different approaches were used to affect the hydrodynamics of the process streams. The first model takes into account the effect of micro-scale particle clustering by adjusting the gas-particle drag law and the second one assumes a turbulent core with pseudo-steady state boundary condition at the wall. A comparison is made with experimental results.
Date: July 1, 2005
Partner: UNT Libraries Government Documents Department

2001 DC Lecture Series: The New Biology - Challenges and Opportunities

Description: The Whitehead Institute for Biomedical Research, in collaboration with Center for Strategic and International Studies (CSIS), developed a series of seminars, ''The New Biology: Challenges and Opportunities'', to stimulate dialogue between leaders in science, medicine, law, biotechnology and senior government policymakers on matters that will shape much of the genomic revolution's impact on individuals and institutions in this country.
Date: April 11, 2006
Partner: UNT Libraries Government Documents Department

In Situ Transmission Electron Microscopy Heating Studies of Particle Coalescence and Microstructure Evolution in Nanosized Ceramics

Description: Final report on in-situ transmission microscopy heating studies of particle coalescence and microstructure evolution in nanosized ceramics. Report includes summary of work on particle shape changes and stress effects, and novel infiltration techniques in the processing of alumina based ceramics.
Date: June 2, 2006
Partner: UNT Libraries Government Documents Department

Homeostatic Adjustment of Loblolly Pine to CO2 Enrichment

Description: We found that exposure of an intact pine forest (Duke FACTS1 experiment) to an increase in atmospheric CO2 of 200 ul(sup -1) operating through a sustained increase of photosynthesis, caused a 27% increase in net primary production and a 41% stimulation in net ecosystem production. A stimulation of this magnitude would store ~10% of the fossil fuel CO2 in the atmosphere by the year 2050. This series of physiological measurements provided new insights into processes regulating the forest carbon cycle under elevated CO2. Combined with ongoing measurements of tree growth data from this research contributes to a dynamic forest carbon budget that provides a benchmark for other modeling and empirical studies.
Date: March 15, 2003
Partner: UNT Libraries Government Documents Department

1995 Site environmental report, January 1995--December 1995

Description: This report provides information about environmental programs and compliance with environmental regulations in calendar year 1995 (CY95) at the Stanford Linear Accelerator Center (SLAC). SLAC is a national laboratory operated by Stanford University under contract with the US Department of Energy (DOE) and is devoted to experimental and theoretical research in elementary particle physics, in basic sciences using synchrotron radiation, and in accelerator physics and technology. SLAC`s Environment, Safety, and Health (ES&H) Division consists of five departments and a Program Planning Office (PPO). Their shared goal is to help ensure that SLAC operates in compliance with federal, state, and local regulations, as well as DOE Orders related to environment, safety, and health. The five departments are: (1) Environmental Protection and Restoration (EPR), (2) Operational Health Physics (OHP), (3) Radiation Physics (RP), (4) Safety, Health, and Assurance (SHA), and (5) Waste Management (WM). The EPR Department oversees the majority of SLAC`s environmental programs, including programs for environmental restoration; waste minimization; air quality; storm water and industrial wastewater; polychlorinated biphenyls (PCBs); and groundwater. The WM Department coordinates disposal of hazardous, radioactive, and mixed waste. The OHP Department, in cooperation with the EPR Department, oversees environmental radiological monitoring and dosimetry at SLAC. The SHA Department oversees quality assurance for SLAC`s environmental activities. The RP Department conducts beam checkouts of new experiments to ensure shielding adequacy for the protection of the workers and members of the general public. The most significant information in this report is summarized briefly in the following sections.
Date: September 1, 1996
Partner: UNT Libraries Government Documents Department

Chemical research at Argonne National Laboratory

Description: Argonne National Laboratory is a research and development laboratory located 25 miles southwest of Chicago, Illinois. It has more than 200 programs in basic and applied sciences and an Industrial Technology Development Center to help move its technologies to the industrial sector. At Argonne, basic energy research is supported by applied research in diverse areas such as biology and biomedicine, energy conservation, fossil and nuclear fuels, environmental science, and parallel computer architectures. These capabilities translate into technological expertise in energy production and use, advanced materials and manufacturing processes, and waste minimization and environmental remediation, which can be shared with the industrial sector. The Laboratory`s technologies can be applied to help companies design products, substitute materials, devise innovative industrial processes, develop advanced quality control systems and instrumentation, and address environmental concerns. The latest techniques and facilities, including those involving modeling, simulation, and high-performance computing, are available to industry and academia. At Argonne, there are opportunities for industry to carry out cooperative research, license inventions, exchange technical personnel, use unique research facilities, and attend conferences and workshops. Technology transfer is one of the Laboratory`s major missions. High priority is given to strengthening U.S. technological competitiveness through research and development partnerships with industry that capitalize on Argonne`s expertise and facilities. The Laboratory is one of three DOE superconductivity technology centers, focusing on manufacturing technology for high-temperature superconducting wires, motors, bearings, and connecting leads. Argonne National Laboratory is operated by the University of Chicago for the U.S. Department of Energy.
Date: April 1, 1997
Partner: UNT Libraries Government Documents Department

New imaging systems in nuclear medicine. Final report, January 1, 1993--December 31, 1995

Description: The aim of this program has been to improve the performance of positron emission tomography (PET) to achieve high resolution with high sensitivity. Towards this aim, the authors have carried out the following studies: (1) explored new techniques for detection of annihilation radiation including new detector materials and system geometries, specific areas that they have studied include--exploration of factors related to resolution and sensitivity of PET instrumentation including geometry, detection materials and coding, and the exploration of technique to improve the image quality by use of depth of interaction and increased sampling; (2) complete much of the final testing of PCR-II, an analog-coded cylindrical positron tomograph, developed and constructed during the current funding period; (3) developed the design of a positron microtomograph with mm resolution for quantitative studies in small animals, a single slice version of this device has been designed and studied by use of computer simulation; (4) continued and expanded the program of biological studies in animal models. Current studies have included imaging of animal models of Parkinson`s and Huntington`s disease and cancer. These studies have included new radiopharmaceuticals and techniques involving molecular biology.
Date: December 31, 1995
Partner: UNT Libraries Government Documents Department

Neutron interactions with biological tissue. Final report

Description: This program was aimed at creating a quantitative physical description, at the micrometer and nanometer levels, of the physical interactions of neutrons with tissue through the ejected secondary charged particles. The authors used theoretical calculations whose input includes neutron cross section data; range, stopping power, ion yield, and straggling information; and geometrical properties. Outputs are initial and slowing-down spectra of charged particles, kerma factors, average values of quality factors, microdosimetric spectra, and integral microdosimetric parameters such as {bar y}{sub F}, {bar y}{sub D}, y{sup *}. Since it has become apparent that nanometer site sizes are also relevant to radiobiological effects, the calculations of event size spectra and their parameters were extended to these smaller diameters. This information is basic to radiological physics, radiation biology, radiation protection of workers, and standards for neutron dose measurement.
Date: February 17, 1998
Partner: UNT Libraries Government Documents Department

Laboratory directed research and development: Annual report to the Department of Energy

Description: As one of the premier scientific laboratories of the DOE, Brookhaven must continuously foster the development of new ideas and technologies, promote the early exploration and exploitation of creative and innovative concepts, and develop new fundable R and D projects and programs. At Brookhaven National Laboratory one such method is through its Laboratory Directed Research and Development Program. This discretionary research and development tool is critical in maintaining the scientific excellence and long-term vitality of the Laboratory. Additionally, it is a means to stimulate the scientific community, fostering new science and technology ideas, which is a major factor in achieving and maintaining staff excellence and a means to address national needs within the overall mission of the DOE and BNL. The Project Summaries with their accomplishments are described in this report. Aside from leading to new fundable or promising programs and producing especially noteworthy research, they have resulted in numerous publications in various professional and scientific journals and presentations at meetings and forums.
Date: December 1, 1998
Partner: UNT Libraries Government Documents Department

Fusion technology development annual report, October 1, 1995--September 30, 1996

Description: In FY96, the General Atomics (GA) Fusion Group made significant contributions to the technology needs of the magnetic fusion program. The work is reported in the following sections on Fusion Power Plant Design Studies (Section 2), Plasma Interactive Materials (Section 3), SiC/SiC Composite Material Development (Section 4), Magnetic Diagnostic Probes (Section 5) and RF Technology (Section 6). Meetings attended and publications are listed in their respective sections. The overall objective of GA`s fusion technology research is to develop the technologies necessary for fusion to move successfully from present-day physics experiments to ITER and other next-generation fusion experiments, and ultimately to fusion power plants. To achieve this overall objective, the authors carry out fusion systems design studies to evaluate the technologies needed for next-step experiments and power plants, and they conduct research to develop basic knowledge about these technologies, including plasma technologies, fusion nuclear technologies, and fusion materials. They continue to be committed to the development of fusion power and its commercialization by US industry.
Date: March 1, 1997
Partner: UNT Libraries Government Documents Department

Laboratory directed research development annual report. Fiscal year 1996

Description: This document comprises Pacific Northwest National Laboratory`s report for Fiscal Year 1996 on research and development programs. The document contains 161 project summaries in 16 areas of research and development. The 16 areas of research and development reported on are: atmospheric sciences, biotechnology, chemical instrumentation and analysis, computer and information science, ecological science, electronics and sensors, health protection and dosimetry, hydrological and geologic sciences, marine sciences, materials science and engineering, molecular science, process science and engineering, risk and safety analysis, socio-technical systems analysis, statistics and applied mathematics, and thermal and energy systems. In addition, this report provides an overview of the research and development program, program management, program funding, and Fiscal Year 1997 projects.
Date: May 1, 1997
Partner: UNT Libraries Government Documents Department

E-SMART system for in-situ detection of environmental contaminants. Quarterly technical progress report, July--September 1997

Description: General Atomics (GA) leads a team of industrial, academic, and government organizations in the development of the Environmental Systems Management, Analysis and Reporting neTwork (E-SMART) for the Defense Advanced Research Project Agency (DARPA), by way of this Technology Reinvestment Project (TRP). E-SMART defines a standard by which networks of smart sensing, sampling, and control devices can interoperate. E-SMART{reg_sign} is intended to be an open standard, available to any equipment manufacturer. The user will be provided a standard platform on which a site-specific monitoring plan can be implemented using sensors and actuators from various manufacturers and upgraded as new monitoring devices become commercially available. This project will further develop and advance the E-SMART standardized network protocol to include new sensors, sampling systems, and graphical user interfaces.
Date: December 1, 1997
Partner: UNT Libraries Government Documents Department

Relativistic atomic beam spectroscopy II

Description: We are requesting support for a postdoctoral person to participate in H{sup -} studies at Los Alamos. In addition, we are requesting funding for a state-of-the-art YAG laser system that would allow us to obtain data at three times our present rate with improved beam quality.
Date: December 31, 1991
Partner: UNT Libraries Government Documents Department

[Synthesis and characterization of novel associating water-soluble copolymers]: Annual progress report, November 15, 1993-November 15, 1994

Description: A large number of hydrophobically associating copolymers of N-vinylpyrrolidone (NVP) or N,N-dimethyl acrylamide (DMA) with perfluoroalkyl acrylates (FOSA) containing between .01 and 1.0 mole % FOSA (with respect to DMA) were synthesized by emulsion and by bulk copolymerization. In contrast with the acrylamide (AM) FOSA copolymers the corresponding NVP and DMA copolymers are soluble in THF and CH{sub 3}OH in addition to water. This is expected to be of help in the characterization. This report discusses the synthesis, the kinetics of AM-FOSA copolymerization, and characterization.
Date: December 31, 1994
Partner: UNT Libraries Government Documents Department

Recommendations for a Department of Energy nuclear energy R and D agenda

Description: On January 14, 1997, the President requested that his Committee of Advisors on Science and Technology (PCAST) make ``recommendations ... by October 1, 1997 on how to ensure that the United States has a program that addresses its energy and environmental needs for the next century.`` In its report, Federal Energy Research and Development for the Challenges of the Twenty-First Century, the PCAST Panel stated that ``the United States faces major energy-related challenges as it enters the twenty-first century`` and links these challenges to national economic and environmental well-being as well as to national security. The Panel concluded that ``Fission belongs in the R and D portfolio.`` In conjunction with this activity, the DOE Office of Nuclear Energy, Science and Technology, together with seven of the national laboratories, undertook a study to recommend nuclear energy R and D responses to the challenges and recommendations identified by the PCAST Panel. This seven-laboratory study included an analysis of past and present nuclear energy policies, current R and D activities, key issues, and alternative scenarios for domestic and global nuclear energy R and D programs and policies. The results are summarized. Nuclear power makes important contributions to the nation`s well-being that can be neither ignored nor easily replaced without significant environmental and economic costs, particularly in an energy future dominated by global energy growth but marked by significant uncertainties and potential instabilities. Future reliance on these contributions requires continuing past progress on the issues confronting nuclear power today: safety, waste management, proliferation, and economics. A strong nuclear energy agenda will enable the U.S. government to meet its three primary energy responsibilities: (1) respond to current needs; (2) prepare the country for anticipated future developments; and (3) safeguard the country from unexpected future events.
Date: December 1, 1997
Partner: UNT Libraries Government Documents Department

E-SMART system for in-situ detection of environmental contaminants. Quarterly technical progress report, April--June 1997

Description: General Atomics (GA) leads a team of industrial, academic, and government organizations in the development of the Environmental Systems Management, Analysis and Reporting neTwork (E-SMART) for the Defense Advanced Research Project Agency (DARPA), by way of this Technology Reinvestment Project (TRP). E-SMART defines a standard by which networks of smart sensing, sampling, and control devices can interoperate. E-SMART is intended to be an open standard, available to any equipment manufacturer. The user will be provided a standard platform on which a site-specific monitoring plan can be implemented using sensors and actuators from various manufacturers and upgraded as new monitoring devices become commercially available. This project will further develop and advance the E-SMART standardized network protocol to include new sensors, sampling systems, and graphical user interfaces.
Date: August 1, 1997
Partner: UNT Libraries Government Documents Department

Proceedings of the workshop on nonlinear MHD and extended MHD

Description: Nonlinear MHD simulations have proven their value in interpreting experimental results over the years. As magnetic fusion experiments reach higher performance regimes, more sophisticated experimental diagnostics coupled with ever expanding computer capabilities have increased both the need for and the feasibility of nonlinear global simulations using models more realistic than regular ideal and resistive MHD. Such extended-MHD nonlinear simulations have already begun to produce useful results. These studies are expected to lead to ever more comprehensive simulation models in the future and to play a vital role in fully understanding fusion plasmas. Topics include the following: (1) current state of nonlinear MHD and extended-MHD simulations; (2) comparisons to experimental data; (3) discussions between experimentalists and theorists; (4) /equations for extended-MHD models, kinetic-based closures; and (5) paths toward more comprehensive simulation models, etc. Selected papers have been indexed separately for inclusion in the Energy Science and Technology Database.
Date: December 1, 1998
Partner: UNT Libraries Government Documents Department

Neutron diffraction: Determining stresses in materials

Description: This paper briefly describes the use of Argonne`s Intense Pulsed Neutron Source to interrogate composite materials. Such materials make up ceramic engine parts, nuclear reactor components, advanced jet engines, etc., and IPNS can be used to make predictions about material quality and life expectancy. The neutron diffraction measures internal residual stresses.
Date: December 31, 1996
Partner: UNT Libraries Government Documents Department

E-SMART system for in-situ detection of environmental contaminants. Quarterly technical progress report, October--December 1997

Description: General Atomics (GA) leads a team of industrial, academic, and government organizations in the development of the Environmental Systems Management, Analysis and Reporting neTwork (E-SMART) for the Defense Advanced Research Project Agency (DARPA), by way of this Technology Reinvestment Project (TRP). E-SMART defines a standard by which networks of smart sensing, sampling, and control devices can interoperate. E-SMART{reg_sign} is intended to be an open standard, available to any equipment manufacturer. The user will be provided a standard platform on which a site-specific monitoring plan can be implemented using sensors and actuators from various manufacturers and upgraded as new monitoring devices become commercially available. This project will further develop and advance the E-SMART standardized network protocol to include new sensors, sampling systems, and graphical user interfaces.
Date: March 30, 1998
Partner: UNT Libraries Government Documents Department